diff --git a/src/event/modules/ngx_kqueue_module.c b/src/event/modules/ngx_kqueue_module.c
index 8039c3d58..61bf43b58 100644
--- a/src/event/modules/ngx_kqueue_module.c
+++ b/src/event/modules/ngx_kqueue_module.c
@@ -369,7 +369,7 @@ static ngx_int_t ngx_kqueue_process_events(ngx_cycle_t *cycle)
     for ( ;; ) {
         timer = ngx_event_find_timer();
 
-#if (NGX_THREADS)
+#if (NGX_THREADS0)
         if (timer == NGX_TIMER_ERROR) {
             return NGX_ERROR;
         }